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JPL Small-Body Database Browser
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490581 (2009 WZ104)
Classification: Aten [NEO, PHA]          SPK-ID: 2490581
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 58 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1927144614833571 1.1311e-07  
a .8553149303033176 1.0457e-08 au
q .6904833741112386 1.0374e-07 au
i 9.835012106202191 2.0919e-05 deg
node 263.2729102403209 1.1395e-05 deg
peri 10.54333579593835 3.8261e-05 deg
M 99.58783214145899 6.755e-05 deg
tp 2458520.573410034311
(2019-Feb-06.07341003)
5.3119e-05 TDB
period 288.9265864004011
0.79
5.2985e-06
1.451e-08
d
yr
n 1.245991255028029 2.285e-08 deg/d
Q 1.020146486495397 1.2472e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1175  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      4417 days (12.09 yr)  
   first obs. used      2005-11-19  
   last obs. used      2017-12-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .16768  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 12:41:07  

Additional Information
 Earth MOID = .0304362 au 
 Jupiter MOID = 4.04328 au 
 T_jup = 6.868 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 20.0   n/a MPO434808  
diameter diameter 0.237 km 0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
rotation period rot_per 19.304 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Karashevich, S.V.; Devyatkin, A.V.; Verestchagina, I.A.; Lyvov, V.N.; Tsekmeister, S.D. (2012) Solar System Research 46, 143-148.]
geometric albedo albedo 0.314   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

490581 (2009 WZ104)          Discovered 2009-Nov-25 by CSS at Catalina
Reference: Last Updated: 2017-05-15

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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